Every morning when I turn on my computer, after the windows splash screen and just before the log-in screen, my display goes black. When I do a hard reboot on the machine, the log-in screen loads just fine. I have no other problems with the machine, and if I turn it off and turn it back on a few hours later, it loads up just fine. But if it has been six or seven hours, the problem recurs. This happens every single day. Unless this came from some messed up windows update, the only other change I have made in the last six months was replacing my video card. I replaced an ati 4970x2 with a evga 680 ftw 4gb. This problem has been ongoing for about a month. My assumptions are either my video is going bad, or my battery on my motherboard is dying and it is looking for on-board video when loading instead of a video card.

If you want to make sure it's not the CMOS battery, leave the computer off for the time you said this happens. Then check your BIOS settings. If they're on their defaults, then you should change the battery. Also if you're seeing an output on the video card, BIOS knows your video card is the primary output, and after that won't change it.

I did do a driver reinstall. I tried to do an inplace upgrade, but the installer said there was an issue and I had to do a fresh install a few weeks ago. Nothing changed.

Also, there is output from the video card, I see the mobo splash screen and everything, it just goes black after the windows splash. My mobo doesn't even have on-board video, so I thought the battery idea may have been a stretch.

Last time I used Driver sweeper, I had to reinstall windows it made such a mess, so no thanks. Besides, I installed the new card in October, the problems only started about a month and a half ago. latiosXT, I switched the cable to the other slot. This time, the screen didn't go off after the splash screen, but it did after I got to the desktop. However, whenever there is this issue, a reboot always resolves it.

latiosXT, I switched the cable to the other slot. This time, the screen didn't go off after the splash screen, but it did after I got to the desktop. However, whenever there is this issue, a reboot always resolves it.

I wonder if the driver was going "You're on monitor 2... no wait! Monitor 1!" If we want to rule out software, boot in safe mode since this doesn't use the video card driver.

latiosXT, I switched the cable to the other slot. This time, the screen didn't go off after the splash screen, but it did after I got to the desktop. However, whenever there is this issue, a reboot always resolves it.

I wonder if the driver was going "You're on monitor 2... no wait! Monitor 1!" If we want to rule out software, boot in safe mode since this doesn't use the video card driver.

I tried starting it in safe mode for multiple days, and it loaded fine. When I restarted windows normally, the screen would go black after I got to the desktop. Today I turned it on and the screen froze on the log-in screen, with a few graphical anomalies on the screen. My anti-virus has been acting up too, I've had to reinstall kaspersky multiple times to fix the issue. So there I have a possible graphics card problem, OS problem, and hard drive problem. Yah.

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